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Se recogen investigaciones en didáctica de la lengua hechas en colaboración en los diferentes niveles educativos - desde la educación infantil hasta la universidad- y llevadas a cabo mayoritariamente en situaciones naturales de enseñanza de la lengua en las aulas. En ellas se estudian diversos procesos derivados de las situaciones de interacción docente-alumno-lengua y los contextos de aprendizaje de la lengua, entre los que constituye una preocupación constante la compleja relación entre el aprendizaje de procedimientos y conceptos. Los trabajos de investigación recogidos en este volumen tienen un punto de partida en común: consideran que el objetivo del conocimiento didáctico no es la prescripción de contenidos sobre los que trabajar en clase de lengua, ni consiste simplemente en describir lo que ocurre en ella, sino que, por el contrario, se trata de intentar comprender e interpretar la realidad de su enseñanza y aprendizaje y transformar la práctica para mejorar el aprendizaje de la lengua y sus usos.
Of the status of bear species by distribution / Christopher Servheen -- An overview of bear conservation planning and implementation / Bernard Peyton, Christopher Servheen, and Stephen Herrero -- Genetics of the bears of the world / Lisette Waits, David Paetkau, and Curtis Strobeck -- The trade in bears and bear parts / Christopher Servheen -- Brown bear conservation action plan for North America (Ursus arctos). Alaska / Sterling D. Miller and John Schoen. Canada / Bruce McLellan and Vivian Banci. United States: grizzly bear in the Lower 48 / Christopher Servheen -- Brown bear conservation action plan for Europe (Ursus arctos). Austria / Georg Rauer. Bulgaria / Nikolai Spassov and G. Spirido...
Christine Hünefeldt documents in impressive, moving detail the striving and ingenuity, the hard-won triumphs and bitter defeats of slaves who sought liberation in nineteenth-century urban Peru. Drawing on judicial, ecclesiastical, and notarial records—including the testimony of the slaves themselves—she uncovers the various strategies slaves invented to gain their freedom. Hünefeldt pays particular attention to marriage relations and family life. Slaves used their family solidarity as a strategy, while slaveowners used the conflicts within families to prevent manumission. The author's focus on gender relations between slaveowners and slaves, as well as between slaves, is particularly o...
The relatively new technique of solid phase microextraction (SPME) is an important tool to prepare samples both in the lab and on-site. SPME is a "green" technology because it eliminates organic solvents from analytical laboratory and can be used in environmental, food and fragrance, and forensic and drug analysis. This handbook offers a thorough background of the theory and practical implementation of SPME. SPME protocols are presented outlining each stage of the method and providing useful tips and potential pitfalls. In addition, devices and fiber coatings, automated SPME systems, SPME method development, and In Vivo applications are discussed. This handbook is essential for its discussion of the latest SPME developments as well as its in depth information on the history, theory, and practical application of the method. - Practical application of Solid Phase Microextraction methods including detailed steps - Provides history of extraction methods to better understand the process - Suitable for all levels, from beginning student to experienced practitioner